Question 653Steam Plants - Assistant Engineer
70% to passCarbon ring packing segments are secured in a shaft gland assembly of a steam turbine by means of _______________.
Acentering rings
Blabyrinth rings
Csteam pressure
Dgarter springs
AI Explanation
The correct answer is D) garter springs. Garter springs are used to secure the carbon ring packing segments in the shaft gland assembly of a steam turbine. These springs apply constant pressure to the carbon rings, ensuring a tight seal around the turbine shaft and preventing steam leakage. The other options are incorrect because: A) Centering rings are used to align the packing segments, but do not secure them. B) Labyrinth rings create a tortuous path for steam leakage, but do not directly secure the packing segments. C) Steam pressure alone is not sufficient to maintain the necessary seal; the garter springs provide the required compressive force.
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